Artículos de revistas
Optimized Synthesis of Silver Nanoparticles by Factorial Design with Application for the Determination of Melamine in Milk
Fecha
2017-01-01Registro en:
Analytical Letters. Philadelphia: Taylor & Francis Inc, v. 50, n. 5, p. 829-841, 2017.
0003-2719
10.1080/00032719.2016.1196213
WOS:000399486900009
WOS000399486900009.pdf
5978908591853524
Autor
Universidade Estadual Paulista (Unesp)
Institución
Resumen
A colorimetric method based on silver nanoparticles was developed for the determination of melamine in milk. Silver nanoparticles were synthesized without any stabilizer, using sodium borohydride as the reducing agent. Optimization of the variables for the formation of the nanoparticles was performed by factorial design, resulting in stable colloidal silver nanoparticles with a mean diameter of 14.0. 2.7 nm. Spectrophotometric measurements performed at 475 nm showed a linear range from 0.033 to 1.50 mg L-1 of melamine with limits of detection and quantification of 0.009 and 0.031 mg L-1, respectively. The method provided highly sensitive determination of melamine in milk.